@article{TRSPY_2012_277_a5,
     author = {M. I. Zelikin and L. V. Lokutsievskiy and R. Hildebrand},
     title = {Geometry of neighborhoods of singular trajectories in problems with multidimensional control},
     journal = {Informatics and Automation},
     pages = {74--90},
     publisher = {mathdoc},
     volume = {277},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2012_277_a5/}
}